How to fix a fault with the wiper to a Nissan Almera Tino?

There is a fault on the interrnittent setting on my front wipers on my nissan almera tino. It goes about a third through it's cycle, stops, then another third, stops, then completes the cycle. This continues all the time it is on the intermittent setting. there is no issue when on the low speed or high speed setting and the intermittent time control works, CAn anyone help identify how I fix this please?